Your post omitted what californiakid needed to know, viz., how to tell the two types apart.
No Dan, for his purposes what I wrote is way more accurate than what you wrote. A 4x5 Graflex holder is too wide to fit in a Graflok/International back and the different light traps means that a 4x5 graphic type holder (sheet, roll film or grafmatic) won't seat properly in a graflex back since they don't have the extra slot that the 6x9 grafmatic has. The 4x5 holders simply aren't interchangeable. The link I provided shows the difference between the two types of grafmatics which will also be true for sheet film and roll film holders and also links to another page that shows both the graflex and graflok backs.
My graphic 23 back says graphic and it is being delivered this week,will let you know if it works on my Shen hao hzx45 graflok back. Thanks for your input
That should be fine - and sorry to derail the thread a bit with Graflex trivia.
Thanks for the info,my graphic "23" back showed up and fits my Shen hao 4x5 perfectly.now I just have to find time from work to go shooting.thanks guys.